Game controller and secure enclosure for an electronic gaming machine

ABSTRACT

Various embodiments of the present invention generally relate to operating an electronic gaming machine to generate a wager-based game. A game control unit including a secure enclosure are provided. The secure enclosure is divided into two compartments. The first compartment securely contains the game control unit, which includes a game controller used to generate the wager-based game and heat dissipation units. The second compartment includes two fans and is accessed by an easily removable magnetically attached cover. The fans and heat dissipation units provide cooling for electrical components associated with the game controller. The fans can be maintained and replaced without compromising the security of the game controller. This feature reduces costs associated with maintaining the electronic gaming machine.

CROSS REFERENCE TO RELATED APPLICATIONS

The present application claims priority under 35 USC 119 to TaiwanPatent Application no. 106207879, filed Jun. 2, 2017, titled, “ComputerApparatus and Fan Device Thereof,” which is incorporated in its entiretyand for all purposes.

TECHNICAL FIELD

The present disclosure relates to electronic gaming machines which aredesigned to provide players with wager-based games. In particular, thepresent disclosure relates to game controllers integrated inside asecure enclosure used to generate the wager-based game.

Electronic gaming machines, such as video slot reel and mechanicalreel-based devices are popular entertainment devices in casinos.Electronic gaming machines use a game controller to generate and presentan outcome of a wager-based game to a player. The game controller ismounted within a gaming cabinet associated with the electronic gamingmachine and is connected to the various input/output on the gamingmachine, such as displays, input buttons, a bill validator and aprinter.

The game controller is kept within a discrete secure enclosure withinthe gaming cabinet. The secure enclosure prevents tampering with thegame software executed by the game controller as well as theelectronics, both of which could potentially affect the outcome of thegame. When the secure enclosure in which the game controller is locatedis opened, such as to perform maintenance on the game controller, aservice technician and security personnel are required to be present,which entails high-labor costs. In view of the above, new designs of thesecure enclosures for game controllers are desired which minimizemaintenance related labor costs.

Overview

Various embodiments of the present invention generally relate tooperating an electronic gaming machine (EGM) to generate a wager-basedgame. In particular, a game controller unit (GCU) and secure enclosurewhich can be installed within a gaming cabinet of the EGM is described.The game controller unit can include a game controller, which executesgaming software to control operation of the EGM.

The GCU is typically mounted within a secure enclosure. In particular,the secure enclosure can be mounted to a backplane where the backplaneis mounted to an interior wall of the gaming cabinet associated with theEGM. The backplane can include connectors that allow the GCU tocommunicate with various input/output (I/O) devices, receive power andmonitor various security sensors within the gaming cabinet.

In particular embodiments, a gaming system can be provided. The gamingsystem can be generally characterized as including an enclosure and aGCU. The enclosure can include two compartments. The first compartmentcan be accessed via a door including a locking mechanism. Thecompartment can be accessed via a cover. In some embodiments, the covercan be removed by hand. The first and second compartments aremechanically isolated from each other except for the provision ofapertures to enable air to flow between the compartments.

The GCU can be disposed within the first compartment of the enclosure.The GCU can include a frame, one or more heat dissipation units coupledto the frame, a plurality of electrical circuit boards coupled to theoutside of the heat dissipation units adjacent to walls of theenclosure. The plurality of electrical circuit boards can form a gamecontroller that executes the game software to control a wager-based gameplayed on an electronic gaming machine. The game controller can includea CPU, GPU, RAM, BIOS and a mass storage device which stores gamesoftware.

A first fan can be disposed within the second compartment. In addition,a first plurality of apertures can be formed between the firstcompartment and the second compartment. The first plurality of aperturesallow air, driven by the first fan, to move between the firstcompartment and the second compartment to cause heat from the heatdissipation units to be removed from the first compartment. The heatdissipation units in the first compartment can be disposed adjacent to afirst side of the first plurality of apertures such, such that when thedoor to the first compartment is locked via the locking mechanism andthe cover and the first fan is removed from the second compartment forservicing the first fan, the game controller is not exposed tamperingallowing the first fan to be serviced by a service technician without apresence of security personnel.

In particular embodiments, the cover for the second compartment isattached via magnets, allowing the cover to be removed by hand withoutthe use of tools. Alternatively, the cover is configured to be slid intoa track, allowing the cover to be removed by hand without the use oftools. The cover can include a second plurality of apertures allowingair to move between outside of the enclosure and the second compartment.

In other embodiments, a second fan and a second plurality of aperturescan be provided. The second plurality of apertures between the firstcompartment and the second compartment, can allow air driven by thesecond fan, to move between the first compartment and the secondcompartment to cause heat from the heat dissipation units to be removedfrom the first compartment. In a particular embodiment, a frame, whichcouples the first fan to the second fan, can be provided which allowsthe first fan and the second fan to be removed as a single unit. Inanother embodiment, the first fan is coupled to the cover to allow thefirst fan and the cover to be removed as a single unit.

A power and data connector located inside of the second compartment canbe provided. The power and data connector can be configured to providepower and provide communications with the fan. The wires to the powerand data connector can be routed outside of the first compartment.

Further, one or more mounting posts perpendicular to a bottom of thesecond compartment can be provided. The one or more mounting can beconfigured to receive the fan and secure it to the enclosure. In oneembodiment, the first fan can be magnetically secured to the enclosure.In addition, a filter can be disposed between a bottom of the fan andthe first plurality of apertures.

Another aspect of the disclosure can relate to a method of servicing anelectronic gaming machine (EGM) including a cabinet. The method can begenerally characterized as providing 1) an enclosure including twocompartments, secured within an interior portion of the cabinet of theEGM, where a first compartment is accessed via a door including alocking mechanism and an intrusion monitoring switch to detect accessand where a second compartment is secured via a cover; 2) a game controlunit, locked, via the locking mechanism, within the first compartment ofthe enclosure, including a frame, two heat dissipation units coupled tothe frame, a plurality of electrical circuit boards forming a gamecontroller, coupled to an outside of the heat dissipation units adjacentto walls of the enclosure, wherein the game controller includes a CPU,GPU, RAM, BIOS and a mass storage device storing game software andwherein the game controller executes the game software to control awager-based game played on the EGM; 3) a first fan disposed within thesecond compartment; and 4) a first plurality of apertures, between thefirst compartment and the second compartment, which allow air driven bythe first fan, to move between the first compartment and the secondcompartment to cause heat from the heat dissipation units to be removedfrom the first compartment; wherein the heat dissipation units in thefirst compartment are disposed adjacent to a first side of the firstplurality of apertures such, such that when the door to the firstcompartment is locked via the locking mechanism and the cover and thefirst fan is removed from the second compartment for servicing the firstfan, the game controller is not exposed tampering.

The servicing method can include 1) opening a door to the cabinet of theEGM, 2) while the door to the first compartment remains locked with thegame control unit secure in the first compartment, removing the cover tothe second compartment; 3) removing the first fan from the secondcompartment; 4) replacing the first fan with a replacement part, such asa second fan; 5) placing the cover over the second compartment; and 6)closing the cabinet. In particular embodiment, the cover can bemagnetically coupled to the enclosure allowing the cover to be removedby hand.

One embodiment of the invention can be generally characterized as adevice. The device can include an enclosure with two compartments. Afirst compartment can be accessed via a door including a lockingmechanism and a second compartment can be secured via a cover.

A game control unit can be disposed within the first compartment of theenclosure. The game control unit can include 1) a frame, 2) a firstdissipation unit, 3) a second heat dissipation unit, 4) a first circuitboard, 5) a second circuit board, 6) a game controller and 7) a firstfan. The first heat dissipation units can be coupled to the frame. Thefirst heat dissipation unit can have a first plate with first finsextending from the first plate.

The second heat dissipation unit can also be coupled to the frame. Thesecond heat dissipation unit can have a second plate with second finsextending from the second plate. The ends of the first fins cansubstantially reach ends of the second fins without overlap between thefirst fins and the second fins. In one embodiment, the first fins andsecond fins can overlap one another. In a particular embodiment, a thirdplate can be coupled to the ends of the first fins and a fourth platecan be coupled to the ends of the second fins. In this embodiment, thethird plate and the fourth plate can substantially contact one another.In one embodiment, the third plate can only cover a portion of the endsof the first fins and the fourth plate can only covers a portion of theends of the second fins to allow air to move between the first fins andthe second fins.

The first circuit board can include at least a CPU mounted to the firstplate, on a side opposite the first fins, between the first plate and afirst wall of the enclosure forming the first compartment. The firstfins can be configured to dissipate heat from the CPU. The secondcircuit board can include at least a GPU mounted to the second plate, ona side opposite the second fins, between the second plate and a secondwall of the enclosure forming the first compartment. The second fins canbe configured to dissipate heat from the GPU. The game controller caninclude the CPU, the GPU, the first circuit board, the second circuitboard, RAM, a BIOS and a mass storage device storing game software. Thegame controller can execute the game software to control a wager-basedgame played on an electronic gaming machine.

The first fan can be disposed within the second compartment. A firstplurality of apertures, between the first compartment and the secondcompartment can allow air driven by the first fan to move between thefirst compartment and the second compartment. The movement of the aircan cause heat from the first heat dissipation unit and the second heatdissipation unit to be removed from the first compartment.

In particular embodiments, a first distance, measured perpendicularlyfrom the first plate, between the first plate and the ends of the firstfins is unequal to a second distance, measured perpendicularly from thesecond plate, between the ends of the second fins and the second plate.The second distance can be greater than the first distance. The firstfins can extend perpendicularly from the first plate and the second finscan extend perpendicularly from the second plate. One or more of a firstangle between the first fins and the first plate or a second anglebetween the second plate and the second fins can be less than ninetydegrees.

In yet other embodiments, the second fins can be grouped into a firstset of fins and a second set of fins. A gap can be provided between thefirst set of fins and the second set of fins. The gap can besignificantly greater than either a first spacing between fins in thefirst set of fins or a second spacing between fins in the second set offins.

A first plurality of heat pipes can pass through the first fins and asecond plurality of heat pipes can pass through the second fins. A firstnumber of the first plurality of heat pipes can be different than asecond number of the second plurality of heat pipes. In particular, thesecond number can be greater than the first number. The second pluralityof heat pipes can pass through the second fins with gaps between each ofthe second plurality of heat pipes. The first plurality of heat pipescan pass through the first fins at locations that align with the gapsbetween the each of the second plurality of heat pipes.

In yet other embodiments, a first spacing between each of the first finscan be different than a second spacing between each of the second fins.Further, a total number of the first fins can be different than a totalnumber of the second fins. The frame includes a first end plate with afirst plurality of apertures configured to receive air flow and a secondend plate with a second plurality of apertures configured to receive theair flow. The sides of the first heat dissipation unit and the secondheat dissipation unit can be positioned adjacent to the first pluralityof apertures and the second plurality of apertures to block tamperingwith the first circuit board or the second circuit board.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure may best be understood by reference to the followingdescription taken in conjunction with the accompanying drawings, whichillustrate particular embodiments of the present invention.

FIGS. 1A and 1B illustrate a perspective and front view of a secureenclosure and backplane for an electronic gaming machine in accordancewith embodiments of the present invention.

FIG. 2 illustrates an electronic gaming machine in accordance withembodiments of the present invention.

FIG. 3 illustrates a block diagram of a game controller for anelectronic gaming machine coupled to various devices in accordance withembodiments of the present invention.

FIGS. 4A, 4B and 4C illustrate top and side views of a backplane for anelectronic gaming machine in accordance with embodiments of the presentinvention.

FIG. 5A illustrates a top view of a game controller unit in accordancewith embodiments of the present invention.

FIG. 5B illustrates a top view of a game controller unit inserted into asecure enclosure in accordance with embodiments of the presentinvention.

FIG. 5C illustrates a perspective view of a game controller unitpartially inserted into a secure enclosure in accordance withembodiments of the present invention.

FIG. 6A, 6B and 6C illustrate side views of a game controller unit inaccordance with embodiments of the present invention.

FIGS. 7A and 7C illustrate top and bottom views of a secure enclosurefor a game controller unit in accordance with embodiments of the presentinvention.

FIG. 7B illustrate a cross sectional view of a secure enclosure with agame controller unit inserted in accordance with embodiments of thepresent invention.

FIG. 8 illustrates a top view of a secure enclosure for a gamecontroller with a cover and fan removed in accordance with embodimentsof the present invention.

FIGS. 9A and 9B illustrate side and perspective views of heatdissipation units for a game controller unit in accordance withembodiments of the present invention.

FIG. 10 illustrates a method of replacing a fan coupled to a secureenclosure for a game control unit in accordance with the presentinvention.

FIG. 11 illustrates a method of forming a game controller unit includingCPU and GPU boards and CPU and GPU heat dissipation units in accordancewith the present invention.

DETAILED DESCRIPTION

Reference will now be made in detail to some specific examples of theinvention including the best modes contemplated by the inventors forcarrying out the invention. Examples of these specific embodiments areillustrated in the accompanying drawings. While the present disclosureis described in conjunction with these specific embodiments, it will beunderstood that it is not intended to limit the invention to thedescribed embodiments. On the contrary, it is intended to coveralternatives, modifications, and equivalents as may be included withinthe spirit and scope of the invention as defined by the appended claims.

In the following description, numerous specific details are set forth inorder to provide a thorough understanding of the present invention.Particular embodiments of the present invention may be implementedwithout some or all of these specific details. In other instances, wellknown process operations have not been described in detail in order notto unnecessarily obscure the present invention.

In general, gaming systems which provide wager-based games aredescribed. In particular, a game controller unit (GCU) and secureenclosure which can be installed within a gaming cabinet of anelectronic gaming machine (EGM) is described. The game controller unitcan include a game controller, which executes gaming software to controloperation of the EGM.

The GCU can include a game controller with a CPU board and a GPU boardand a heat dissipation system. The GCU can be configured to be mountedwithin a secure enclosure. The secure enclosure can be mounted to abackplane. The backplane can include connectors that allow the GCU tocommunicate with various input/output (I/O) devices on an EGM, receivepower and monitor various security sensors. The backplane can be securedto one of the walls within an interior of an EGM cabinet.

In more detail, with respect to FIGS. 1A and 1B, a perspective and frontview of a secure enclosure and backplane for an EGM are described. TheGCU can reside within the secure enclosure. With respect to FIG. 2, anEGM, which can be controlled by a GCU, is discussed. A block diagram ofa game controller which can be utilized in a GCU is described withrespect to FIG. 3.

With respect to FIGS. 4A, 4B and 4C, a backplane for an EGM isdiscussed. With respect to FIGS. 5A to 6C, a GCU, which can be installedwithin a secure enclosure mounted to a backplane, is described. The GCUincludes components, such as not limited to CPU board, a GPU board, heatdissipation system and a frame.

With respect to FIGS. 7A to 9B, a heat dissipation system of the GCU isdescribed. In particular, with respect to FIGS. 7A, 7B and 7C, air flowpatterns through the secure enclosure and GCU are discussed. Withrespect to FIG. 8, a fan cover, fans and a fan enclosure associated withthe secure enclosure are discussed. The fan cover, fans and fanenclosure are part of the heat dissipation system. With respect to FIGS.9A and 9B, two heat dissipating units for a game controller unit aredescribed.

With respect to FIG. 10, a method of replacing a fan coupled to a secureenclosure for a game controller. The fan can be replaced without openinga portion of the secure enclosure including the GCU. This feature allowsa technician to perform the operation without the presence additionalsecurity personnel. Finally, FIG. 11 illustrates a method of forming aGCU unit including CPU and GPU boards and heat dissipation units.

Details of the aforementioned figures are now described. FIGS. 1A and 1Billustrate a perspective and front view of a secure enclosure andbackplane for an EGM. In FIGS. 1A and 1B, a system 100 includes thebackplane 114 and a secure enclosure 102. The backplane 114 is mountedwithin a cabinet associated with an EGM. The secure enclosure 102 ismounted on the backplane 114.

Fasteners, such as screws, can be inserted through apertures, such as116, in the backplane to secure the backplane 114 to an interior wall ofthe cabinet. The backplane 114 and secure enclosure 102 can be securedto a wall of the cabinet in an upright orientation on a sidewall, suchas shown in FIG. 1B. In alternate embodiments, the backplane andenclosure can be rotated ninety degrees or by some other angle andsecured to an interior wall. Further, the backplane and enclosure can bemounted on a top wall of the cabinet such that it is hanging down or abottom wall such that it extends upwards.

In one embodiment, the backplane 114 can be approximately 260 mm by 252mm. The dimension of enclosure 102 can be approximately 292 mm high by104 mm wide. The depth of the enclosure (into the page) can be about 247mm. The dimensions allow the backplane 114 and enclosure 102 to beinstalled into a wide variety of gaming cabinets. Other dimensions arepossible and these dimensions are provided for the purposes ofillustration only.

The enclosure 102 can include a top portion 110. The top portion 110 canenclose one or more fans. In this example, two fans are secured with theenclosure. The top portion includes a cover 112. The cover 112 as willbe discussed in more detail can be removed to allow the fans to beaccessed and if necessary replaced. The covers 112 include apertureswhich allow air to be pulled through the fans and into the enclosure 102or air to be pulled out of the enclosure. The air flow can be used forcooling electrical components within the enclosure, such as but notlimited to a CPU and a GPU.

The enclosure 102 includes a door 104 coupled to hinges 106. The door104 swings open on the hinges 106 to allow a GCU to be inserted orremoved from the enclosure (see FIG. 5C). The door 104 can include alocking mechanism 108. The locking mechanism 108 can be coupled to asecurity sensor, which detects when the locking mechanism is utilized.Typically, when the GCU is accessed in field via opening of the door104, a technician and e security personnel are required to be present.

The backplane 114 includes areas 118 and 120 on either side of theenclosure 102. Areas 118 and 120 include connectors. The connectors ineach area can be coupled to a backplane board. The backplane boardprovides an interface to the GCU. Via the interface, a game controlleron the GCU can communicate with devices coupled to the connectors on thebackplane. Some examples of devices which can be coupled to theconnectors are described as follows with respect to FIG. 2. Additionaldetails of the connectors are described in more detail with respect toFIGS. 4A, 4B and 4C.

FIG. 2 illustrates an example of an EGM 200, which can include thebackplane and secure enclosure described above with respect to FIGS. 1Aand 1B. A GCU within the secure enclosure can be configured to operatethe EGM 200 to play a wager-based game. Examples of wager-based gameswith which the GCU can be utilized include but are not limited to videoslot games, mechanical slot games, card games (e.g., poker and blackjack), lottery games and bingo games.

The EGM 200 includes a main cabinet 202 and a top box 204. The maincabinet 202 can include a door with a locking mechanism. The door canallow access to an interior of the main cabinet. As described above, thebackplane, the secure enclosure for the GCU and the GCU can be locatedwithin the main cabinet. In an alternate embodiment, the backplane, thesecure enclosure for the GCU and the GCU can be located within a topbox, such as 204.

The locking mechanisms can be monitored by one or more security sensors.The security sensors can be configured to send data to the GCU.Typically, the GCU will enter a tilt mode when the door to the interiorof the gaming cabinet is opened. In a tilt mode, game play on the EGM200 can be suspended.

The EGM 200 includes displays 206, 208, 210 and 212 and speakers 214 aand 214 b. The displays and speakers can be used to output video andaudio content associated with a wager-based game played on the EGM 200including a primary game and a bonus game. Further, the displays andspeakers can be used to output alternate content, such as advertising,player tracking services or other casino services. In one embodiment,display 212 can be used to provide player tracking services. All or aportion of displays 206, 208, 210 and 212 can be touch screens.

The EGM 200 includes an interface 218 to a bill validator 218. The billvalidator 218 can be configured to accept cash or printed tickets. Thebill validator can confirm deposited currency is real, determine itsdenomination and store it in a box coupled to the bill validator. Thecurrency can be used to deposit credits on the EGM 200. The credits canbe used to play a wager-based game on the EGM.

Further, the bill validator can read information from a printed ticket.The printed ticket can be redeemed from some amount of credit. The billvalidator can read information from the printed ticket and send it tothe GCU. The information can be sent to a remote server. The remoteserver can validate the printed ticket for an amount of credits, whichis then deposited on the EGM.

In one embodiment, the bill validator can include a wireless interface.Via the wireless interface, the bill validator can communicate with aportable electronic device, such as a smart phone. In one embodiment,via the smart phone, an electronic transfer of credits can be made tothe EGM via the bill validator.

The printer interface 216 can allow printed tickets to be dispensed fromthe EGM 200. A ticket can be printed to cash out an amount of creditsremaining on the EGM. The printed ticket can be redeemed for cash orused to deposit credits on another EGM. The EGM 200 and its associatedgame controller can communicate with a remote server to both validatepreviously printed tickets and generate new printed tickets.

A game controller with the cabinet can monitor the bill validator andprinter for error conditions. Error conditions can involve an attempt totamper with the devices, which can be detected and reported by thedevices to the game controller. Further, for the printer, conditions,such as paper jam, low paper or malfunctions can be reported to the gamecontroller (see 250 in FIG. 3). For the bill validator, conditions, suchas jams, counterfeit attempts or a high fill level of the bill stackercan be reported to the game controller. In response, the game controllercan optionally place the EGM 200 in a tilt condition and/or requestservice for the gaming machine.

The EGM 200 can include a card reader 220 configured to read a magneticstriped card, a chip card and/or a card with a printed bar-code. Thecard reader 220 can also include a wireless interface for communicatingwith a smart phone. The card reader 220 can be a stand-alone unit or canbe part of a player tracking unit. In some instances, the card reader220 can be configured to communicate directly with a game controller,such as to send information read from a card to the game controller orreceive commands from the game controller.

In other instances, the card reader can be configured to communicatewith a player tracking controller. The player tracking controller canprovide loyalty program services, such as awarding comps to a player orassociating game play on the EGM 200 with a particular player account.In one embodiment, the player tracking controller can be configured tocontrol a display, such as 212 and the card reader 220, to provideplayer tracking services. This function can also be done by the gamecontroller.

When present, the player tracking controller can be configured receiveinformation from the card reader and send commands to the card reader.Further, the player tracking controller can also be configured tocommunicate with the game controller and a remote server. The playertracking controller can communicate with the game controller to sendinformation read from a card in the card reader 220 and to depositcredits on the EGM. Further, the player tracking controller can receivegame play information from the game controller, such as amounts wageredand won.

When a card is inserted into the card reader, the player trackingcontroller (or game controller) can communicate with a remote server todetermine whether a player tracking account is associated with the card.When the card information is validated, game play information can besent to remote server and stored in a player tracking account associatedwith card. Based upon a player's previous game play information storedin a player tracking account on a remote server, awards, such ascredits, can be deposited on the EGM 200.

Game play decisions, such as an amount to wager, initiating a game,making game play selections (e.g., selecting cards in a card game orchoices in a bonus game), can be made via a player input panel 222. Inthis example, the player input panel 222 includes a display and a touchsurface and a mechanical button 224. The display and touch surface canbe used to output selectable buttons that can be used to play a game.The mechanical button 224 can be used to make a game choice, such asinitiating game or a cash out. The inputs from the player input panel222 and mechanical button 224 can be sent to the game controller insidethe cabinet.

In alternate embodiments, rather than a touch screen and display, aplurality of input buttons can be provided to make game decisions. Insome instance, the input buttons can include built-in displays which canbe used to change the functions of the buttons. Besides the input panel222, one or more of the displays, such as 208, 210 and 212 can includetouch screens. The touch screens in conjunction with the display can beused to make game play decisions under control of the game controller.

The displays, speakers, bill validator, printer, buttons, touch screensand card reader can be coupled to the backplane described above withrespect to FIGS. 1A and 1B. Via the backplane interface, the gamecontroller on the GCU can communicate with these devices includingsending commands to the devices and receiving information from thedevices to implement various functions, such as those described above.

Other devices (not shown) can be coupled to EGM. These devices can becoupled to the game controller on the GCU via the backplane. Someexamples of these devices can include but are not limited to a coinacceptor, reels, wheels, coin dispensers, lighting devices, a candleused to summon attention to a gaming machine, wireless and wiredcommunication interfaces and bonus devices.

Next, a block diagram of a game controller, which can be incorporatedinto a GCU, is described. FIG. 3 illustrates a block diagram a system240 including a game controller 250 coupled to gaming devices on an EGM,such as the EGM 200 described above in FIG. 2. The game controller 250can embodied as one or more circuit boards. The circuit boards caninclude various electric components which are described in more detailbelow.

In one embodiment, a first board can include a chipset 202. The chip set202 can include a northbridge 204 a and a southbridge 204 b. Thenorthbridge 204 a can provide: 1) a front-side bus which allowscommunication with one or more CPUs, such as microprocessor 206, 2)memory bus, which allows communications with RAM chips placed in memoryslots and 3) a high-speed graphics bus. The high speed graphics bus canbe an accelerated graphics port or a PCI express.

Between the northbridge 204 a and the southbridge 204 b can be aninternal bus. The southbridge 204 b can provide an I/O controller hub.In addition, the southbridge 204 b can communicate with a PCI busincluding PCI slots, can provide communications to devices compatiblewith IDE, SATA, USB, Ethernet, audio codec and CMOS memory and canprovide a low pin count bus. For example, a mass storage device, such asa flash drive or hard drive, can communicate with the chip set 202 viathe southbridge 204 b. The mass storage device can include game software216. The game software can include an operating system, a random numbergenerator used to generate random numbers for a wager-based game andgame software for generating a wager-based game played on the EGM, suchas graphics software and paytables.

Via the southbridge 204 b, the game controller 250 can communicate withI/O devices, such as displays, reels, wheels, lighting devices,speakers, an audio amplifier, input buttons, touch screens, a billvalidator, printer, card reader, player tracking unit and communicationinterfaces. The communication interfaces can allow communicationsbetween remote servers and the game controller 250, such as serversproviding accounting services, ticket-in/ticket-out services, playertracking services and progressive game services. In addition, sensors220 and hard meters 222 can be coupled to the chip set via thesouthbridge 204 b.

The sensors 220 can be security sensors, such as sensors which monitoractuation of locks, access to an interior of the gaming machine andaccess to the secure enclosure including the GCU. In addition, the gamecontroller 250 can receive sensor data from various devices, such as thebill validator and printer. The sensor data can identify conditionswhich need attention, such as a paper jam or low paper in a printer or afull stacker associated with the bill validator. In response to datafrom the sensors 220, the game controller 250 can be configured toexecute various responses, such as requesting maintenance from atechnician or placing the EGM into a tilt condition.

The meters 222 can be mechanical devices which record various activitieshappening on the EGM, such as amount of cash/credit deposited on ordispensed from the EGM. These devices are often referred to “hard”meters. In addition, the software 216 can maintain a number of “soft”meters. The soft meters can be maintained via the software 216 and canalso include records of activity on the EGM.

Also, via the southbridge 204 b, the chip set 202 can communicate with anon-volatile memory 210. The non-volatile memory can be configured tostore critical game data. Typically, wager-based games are implementedas state machines where each time a state is implemented, criticalinformation associated with the state is stored to the non-volatilememory before advancing to the next state. In the event of amalfunction, such as a loss of power, the game controller 250 can beconfigured to recall critical information from the non-volatile memory210 and restore to the EGM to its state prior to the malfunction.Examples of critical information can include credits on the EGM, anamount wagered, a current state of a wager-based game played on the EGMand soft meter information.

The non-volatile memory 210, to allow information to be stored in anevent of a power-hit, typically requires a fast write times. One suchtype of memory, which has suitable write characteristics, is abattery-backed RAM. The battery-backed RAM is often referred to as anon-volatile RAM. Typically, memory in RAM is lost when power is lost.The battery supplies power to the RAM so that the information persistsin the event of power loss. The game controller 250 can monitor thebattery level to ensure the critical data in the NV-RAM preserved andthe battery is replaced as necessary. For security and data integrity,multiple copies of critical data can be stored in the NV-RAM. Further,the critical data can also be encrypted if desired.

In an alternate embodiment, one or all of the non-volatile memory 210,the I/O 218, the sensors 220 and the meters can be coupled to the securelogic device 212. Thus, these components can communicate with thesouthbridge 204 b via the secure logic device 212. For example, thesecure logic device 212 can be interposed between in the communicationpath between the southbridge 204 b and the non-volatile memory 210.

Via the low pin count bus, communications can be carried out with superI/O, such as a serial port, parallel port, floppy disk, keyboard andmouse. Also, via the low pin count bus or another bus, such as a USB,communications can be carried out with a secure logic device 212 and theBIOS 214. The secure logic device 212 can be used to provide varioussecurity functions, such as validating information stored on the BIOS214 and decrypting information stored on the BIOS.

Next, with respect to FIGS. 4A, 4B and 4C, details of the back plane aredescribed. The backplane can provide interfaces which allow variousgaming devices to be coupled to the game controller 250 described abovewith respect to FIG. 3. Different EGMs can have different types andnumbers of devices using different types of connectors. Thus, the numberand type of connections is provided for the purposes of illustration isfor the purposes of illustration only and is not meant to be limiting.

FIGS. 4A, 4B and 4C illustrate top 300 and side views, 330 and 350, of abackplane 114 for an electronic gaming machine, such as 200 in FIG. 2.In FIG. 4A, the board 114 includes connectors 302 for receiving flatextensions from boards within the secure enclosures. The flat extensionscan include electrical contacts that interface with connectors 302. Theelectrical contacts can be utilized for communications and providingpower to the circuit boards associated with the GCU, such as themotherboard including the chipset and microprocessor (see FIG. 3). Thesecure enclosure (see FIG. 1) can be mounted over the connectors 302 toseal the enclosure.

In FIG. 4A, circuitry (not shown) can couple the connectors 302 to otherconnectors in areas 118 and 120. For example, area 118 includes serialconnectors with different number of pins, such as 304, 306 and 308. Theserial connectors may be used to communicate with devices, such as touchscreens, metering devices, bill validators, printers and othermechanical devices coupled to the EGM. These devices can also use othertypes of serial connectors, such as USB connectors. In some embodiments,the connectors can include secure covers allowing a connected device tobe locked in place and to prevent tampering with the connection.

FIG. 4B shows a side view 330 of the backplane 114 with a view of theconnectors in area 120 of FIG. 4A. A circuit board 312 is mounted tostructure 314. The structure 314 can be fastened to a wall within theinterior of a gaming machine cabinet. The circuit board 312 can providecommunication links from the connectors to the connectors 302.

The connectors in area 120 include a plurality of displayport™connectors, such as 310 a and 310 b. The displayport connectors allowgraphics and sound to be sent to various displays and speakers, such asa main display used to output the wager-based game or secondarydisplays. Secondary displays can even include displays within inputbuttons. Other types of connectors, alone or in combination with thedisplayport connectors can be used, such as mini display port, HDMI,USB, DVI, lightning and VGA. Thus, this example is provided for thepurposes of illustration only and is not meant to be limiting.

FIG. 4C shows a side view 350 of the backplane 114 with a view of theconnectors in area 118 of FIG. 4A. Four VGA video connectors, such as316, two Ethernet connectors, such as 318, and four USB connectors, suchas 320 are visible. The Ethernet connectors can allow wiredcommunications with remote servers. Wireless communications with remotedevice and local devices, such as a player's smart phone or tablet arepossible and the example of wired communications is provided for thepurposes of illustration only. Again, the game controller 250 in FIG. 3can access these connectors via connectors 302 shown in FIG. 4A.

Next, with respect to FIGS. 5A-5C, a game control unit (GCU) and itsinterface with the secure enclosure 102 is described. FIG. 5Aillustrates a top view of a GCU 400. The GCU 400 includes a frame. Theframe includes a center piece 402 which spans a length of the GCU 400and two end pieces 404 and 406. The frame also includes a bottom piece(not shown). A handle 408, which allows, the GCU 402 to be inserted intoor removed from the secure enclosure 102 is attached to the framecomponent 402.

Two heat dissipation units 414 and 416 are coupled to the frame beneaththe frame component 402. The heat sinks are disposed within an interiorof the GCU 400. Boards, such as 410 and 412 are located on the exteriorof the GCU 400. The positioning of boards on the outside of the GCUallows components, such as a graphics card, a processor, memory and amass storage device to be more easily accessed. For example, when theGCU 400 is not in the enclosure 102, these components can be easilyremoved or installed on the GCU.

FIG. 5B shows the GCU installed in a secure enclosure 102 with the door104 removed (see FIG. 5C). The door 102 is attached to hinge 106. Whenthe enclosure 102 is secured to the backplane 114, as shown in FIG. 5C,the connectors 302 are located at the bottom of the secure enclosure202. The GCU 400 is inserted into the enclosure 102 such that contact ismade between electrical contacts associated with the boards on theoutside of the GCU. In this position, the boards, which form the gamecontroller 250 (see FIG. 3), can receive power from the backplane andcommunicate with the various devices coupled to the backplane. Inaddition, the game controller can communicate with remote devices viathe remote communication interfaces, such as the Ethernet connection.

FIG. 5C shows the GCU partially inserted into the enclosure 102. Theframe components 404 and 406 are shaped such that the GCU 400 can beinstalled in only one orientation. This ensures that the electricalcontacts from the boards align with the connectors 302 on the backplanein FIG. 4A. Once the GCU 400 is fully inserted into the enclosure 102,door 104 can be closed and then secured with a lock. As described above,when the GCU 400 is installed in the secure 102 or removed from theenclosure, it may have to be done in the present of multiple securityand/or regulatory officials.

In FIG. 5B, two USB terminals, such as 430, and an Ethernet terminal 432are exposed. Via the USB terminals or the Ethernet terminal, the gamecontroller 250 can be accessed. In various embodiments, the gamecontroller 250 can be accessed for diagnostic purposes, to authenticatesoftware installed on the game controller 250 or to install new softwareon the game controller 250. For example, a gaming regulator may couple acomputer to the game controller 250 to validate game software installedon the game controller 250. Once the software is validated, the door 104can be closed and locked.

FIGS. 6A, 6B and 6C illustrate side views of a game controller unit 400.In FIG. 6A, frame component 406 is shown. Frame component 406 includestwo apertures, 440 a and 440 b. The two apertures allow air to flowthrough the frame 406 and enter into fin stacks associated with the heatdissipation units 414 and 416.

Frame component 404 is located on the opposite side of frame component406. Frame component 404 also includes two apertures, 442 a and 442 b.The apertures also allow air flow through the heat dissipation units 414and 416.

The apertures, such as 440 a, 440 b, 442 a and 442 b, on framecomponents 404 and 406 can vary in size, number and shape. For example,a single aperture can be provided on either side or a plurality ofsmaller apertures can be provided on one or both side sides. The size,number and shape of the apertures on the frame components 404 and 406can be varied to change the air flow patterns and air flow flux throughthe heat dissipation units.

In addition, the apertures can be sized and shaped such that accessthrough the apertures to components on the boards 410 and 412 is limitedor blocked. In one embodiment, the heat dissipation units substantiallyfill the apertures and include solid metal sheets to block access to thecomponents on the boards. This feature can help to prevent tampering,such as trying to gain access to the game controller boards via air flowapertures in the secure enclosure, such as when the fans are removed.

FIG. 6B shows side views of the GCU 400 such that the boards 410 and 412are visible. Board 410 can include slots for a CPU 426, a BIOS 424 andslots for RAM 430. Board 412 can include a slot for a GPU 428 and a massstorage unit 422. The mass storage unit can be a persistent memory, suchas a hard drive or a flash drive. A non-volatile memory unit, such as abattery-packed NV-RAM (not shown), can also be coupled to one of theboards.

The mass storage unit can store the game software executed by the gamecontroller 250. In its location on the outside of the GCU 400, the massstorage unit 422 can be easily accessed. This position allows the massstorage unit 422 to be easily installed or replaced. For example, themass storage unit 422 can be swapped with another mass storage unit tochange the game software executed on the gaming machine, such as thetype of game which is played.

Thermal Management System

Next details of the thermal management system associated with the GCUand secure enclosure are described with respect to FIGS. 7A-9B. Thethermal management can be configured to remove heat from the secureenclosure including the GCU such that the components associated with theGCU don't overheat. Within the GCU, electrical components such as theCPU and GPU generate the most heat. The heat dissipation units aredesigned to pull heat away from these components. Then, fans coupled tothe secure enclosure pump in cooler air and vent the heated air to helpkeep the GCU components cool.

The thermal management system can also be designed to provide a certainlevel of air quality. Casino environments can be smoky and dusty. Smokeand dust can reduce the expected lifetime of electrical components.Thus, filters can be provided which reduce an amount of smoke and dustparticles that enter the enclosure.

Finally, the thermal management system can also be designed with bothsecurity and maintenance in mind. Towards this end, thermal managementcomponents can be positioned and air flow pathways can be designed suchthat critical components within the secure enclosure are not exposed totampering. Some examples of this component positioning have already beendescribed above with respect to FIGS. 6A and 6C.

In addition, the thermal management components can be designed to beeasily maintainable while not comprising overall security of thissystem. In particular, which is described in more detail below,components, such as the fans and their associated enclosure, can bedesigned such that it is possible to maintain and replace them withoutexposing critical components such as the game controller to tampering.Thus, it may be possible to maintain the fans without the presence ofsecurity personnel. Details of these designs are described as follows.

Components, such as FIGS. 7A and 7C illustrate top 500 and bottom 520views of a secure enclosure 102 including a game control unit 400 andFIG. 7B illustrates a cross section 510 of the GCU 400 and the enclosure102. In FIG. 7A, air, 502 a and 504 a, which can be inside a gamingmachine cabinet, can enter the top of the enclosure 102. The enclosure102 can include a fan cover 112 with a plurality of apertures. The air502 a and 504 a can pass through these apertures.

In FIG. 7B, cross sections of two fans 506 a and 506 b are shown. In oneembodiment, the fans can be configured to pull air into the enclosure102 so that the air is pulled through the fan cover 112 as shown in FIG.7A. The direction of the air flow is indicated by arrows 502 b and 504b.

In another embodiment, the fans can be configured to push air out of theenclosure 102. In this embodiment, the direction of the arrows in FIGS.7A, 7B and 7C can be reversed. In some embodiments, the fans, such as502 b and 504 b can be configured to operate in either direction,sometimes pulling air through fan cover 112, and other times pushing airout of fan cover 112. In various embodiments, the fans can be a singlespeed or can be multi-speed fans.

In one embodiment, the fans can be DC brushless fans. The dimensions canbe about sixty mm by sixty mm by twenty five mm. The fans, 502 b and 504b, can be configured to operate on nominally twelve Volts of directcurrent with current of about one hundred fifty five milliamps. The fansrotate in a counter-clockwise direction with a nominal rotation rate ofabout 6000 RPM. The fan operational temperature range of -ten to seventydegrees C. The air flow for the fans is 27.8 cubic feet per minute(CFM). The fan casing includes four 4.5 mm mounting holes, which allowthe fan to be mounted over mounting posts extending from a bottom of thefan enclosure.

Returning to FIG. 7B, the air flow 502 b and 504 b enters fans 506 a and506 b. The air then passes through apertures in the frame of the GCU(see FIGS. 6A and 6C) and enters into the heat dissipation units (see414 and 416 in FIGS. 6A and 6B). The heat dissipation units include aplurality of fins, such as 512, and heat pipes, such as 508 a and 508 b.

The heat pipes carry heat away from hot elements on the circuit boards,such as CPU and GPU. The circuit boards form the game controller. Thefins can be formed in a fin stack to dissipate the heat, such as heatcarried on the heat pipes. The heat transferred to the fins can becarried away by the air 502 c and 504 c flowing over the fins. Furtherdetails of the heat dissipation units are described with respect toFIGS. 9A and 9B.

Next, the air, such as 502 d and 504 d, which is now heated, can bepushed through apertures 442 a and 442 b in the frame of the GCU (seeFIG. 6C). Then, the air, 502 e and 504 e, is pushed through a pluralityof apertures in the side 115 of the enclosure 102. The plurality ofapertures is arranged into two groups 516 a and 516 b. The air 502 e and504 e from the interior of the enclosure can exit into an interior ofthe cabinet of the gaming machine.

In particular embodiments, filters can be used at one or more locationswithin the thermal management system. For example, a filter can beintegrated with the fan cover 112. In another embodiment, a filter canbe disposed between the fans 506 a and 506 b and a bottom of anenclosure including the fans (see FIG. 8). In yet another example,filters can cover aperture groups 516 a and 516 b from an interior(between GCU and enclosure) or exterior position (outside of enclosure).

Next, with respect to FIG. 8, details of the fan cover 112, fans 506 aand 506 b, and a fan enclosure 602 are described. In FIG. 8, the fancover 112 is shown removed from the secure enclosure 102. As describedabove, the secure enclosure 102 secures the GCU. In addition, a secondenclosure 602 is provided to secure the fans 506 a and 506 b. Thus, thesecure enclosure 102 is divided into a first compartment, which receivesthe GCU via a door, and a second compartment, which is accessed via thefan cover.

The second compartment 602 is separated from the first compartment via abottom portion formed from a material such as a metal. The bottomportion includes apertures, such as 606. The apertures allow air fromthe fans to enter or exit the first compartment. A filter and/or metalmesh can be disposed over the apertures between the fan and the bottomportion of the second compartment.

In one embodiment, the fan cover can be removed by hand without the useof tools. For example, magnets, such as 604 a and 604 b, can beprovided. The magnets can be secured to the enclosure 102. The fan covercan be formed from a magnetic material or can include a magneticmaterial located above the magnets. Thus, the fan cover can bepositioned above the magnets by hand and secured in place. Using themagnetic fasteners, the fan cover can be removed by hand without usingtools.

In another embodiment, a track can be provided which is configured toreceive the fan cover 112. The fan cover can be configured to slide intothe track by hand to secure it in place or remove it from the enclosureby hand without using tools. In yet another embodiment, the fan covercan be attached with a fastener, such as mechanical clips. Themechanical clips can be configured to allow the fan cover to be easilypopped on attached to the secure enclosure or popped off of the secureenclosure, via hand or with a tool such as flat head screw driver.

Once the fan cover 112 is removed, one or both of the fans 506 a and 506b can be removed from the fan enclosure 602. The fan enclosure 602 caninclude mounting posts for receiving the fans. In this example, fourmounting posts, such as 608, are shown. The mounting posts can beinserted into mounting holes in the fan casing of fan 506 a.

The fan 506 a can be positioned over the mounting posts and lowered tosecure the fan into place. If filters and/or a mesh are provided, thefilter and/or mesh can be first positioned over the apertures and thenthe fan 506 a can be lowered onto the mounting posts.

In one embodiment, a magnet can be placed on the bottom of the fan 506a. The magnet can secure the fan to the bottom portion of the enclosure.In another embodiment, the force that holds the fan cover 112 in placecan also hold the fan 506 a in place.

The fan 506 a can include a lead and connector 610 for receiving power,control signals and communicating the fan status. In one embodiment, thefan can be configured to be turned on or off. In another embodiment, itcan be configured to be always on. Further, the fan can be configured toreport its operational status. For example, the fan can be configured toreport it is not operational to the game controller. In response, thegame controller can be configured to generate a maintenance request.

In one embodiment, one or more lead and connectors s, such as 612, canbe provided from the backplane for providing power to the fans. The leadand connector 610 can be configured to interface with the lead andconnector 612 from the back plane. In one embodiment, one or more leadsand connectors can be passed through a space between the fan cover 112and the bottom portion of the enclosure 602 where the secure enclosureis mounted to the back plane.

In another embodiment, one or more leads and connectors can be run fromoutside of the secure enclosure and into the fan enclosure 602. The oneor more leads and connectors can be coupled to the backplane. Forexample, the fan cover 112 can include a gap which allows the wires froma lead and connector to pass into the enclosure. In yet anotherembodiment, lead and connector 610 can be configured to run from the fan506 a, outside of the enclosure 102 and connect directly to a connectoron the backplane and connector 612 may not be provided.

In yet a further embodiment, a power/data connector (not shown) can bebuilt into the enclosure 602. When the secure enclosure 102 is attachedto the backplane, an interface can be provided that mates with aninterface on the backplane and delivers power to the built-in power dataconnector. The lead and connector 610 can be coupled to this built-inpower/data connector.

In one embodiment, the fans 506 a and 506 b can be individuallyinstalled and replaced. Hence, separate power/data connectors can beprovided for each fan. In another embodiment, the fans 506 a and 506 bcan be formed as a single unit, such as via a frame that joins bothfans. The single unit can include a single power and data connector thatprovides power to both fans and receives data from both fans.

In yet another embodiment, when a single unit with one or more fans isprovided, as described above in the previous paragraph, the fan unit canbe designed to be slid into the secure housing in a manner similar tothe GCU, i.e., horizontally slid into the enclosure as opposed to bevertically lifted from the fan enclosure. In this embodiment, the fanenclosure 602 can include a track for receiving the one or more fanunits, which are slid into the fan enclosure.

In yet another embodiment, the fan cover can be joined to the fans as asingle unit. Thus, when the fan cover is removed, the fans arehorizontally lifted from the fan enclosure as a single unit. Then, thefans can be disconnected and then a new fan cover with fan units can beinserted into the fan enclosure. The new fan cover and fan units canthen be connected to power and data and operations can be resumed.

In FIG. 8, a joint wall divides the secure enclosure 102 into a firstenclosure for receiving the GCU and the second enclosure for receivingthe one or more fans. In yet another embodiment, the fan enclosure canbe formed as a separate unit from the secure enclosure. The fanenclosure can have an open bottom or can have its own bottom wallseparate from a wall that forms the secure enclosure.

The fan enclosure and fans can be designed to be removed and attached tothe secure enclosure as a single unit. Thus, during operation a firstfan enclosure including one or more fans can be coupled to the secureenclosure and coupled to power and/or data connectors, such that thefans are powered. When maintenance is required, the first fan enclosureand fans can be decoupled from the secure enclosure and replaced with asecond fan enclosure. Then, if desired, maintenance can be performed onthe first fan enclosure at a location away from the EGM, such as toclean it and/or replace one or both fans in the enclosure.

An advantage of having the secure enclosure partitioned into two parts,i.e., a first compartment for the GCU and a second compartment for thefans, is the fans can be maintained without compromising the security ofthe GCU. Thus, fans can be cleaned and/or replaced without the need forthe full security that is entailed when the game controller on the GCUis accessed. If the fans were located within the compartment with theGCU, then replacing the fans would require a full security complementbecause of the possibility of tampering with the game hardware orsoftware on the GCU. Thus, this approach reduces the costs associatedwith fan maintenance.

When fans require maintenance, the EGM remains inoperable and hence itis not generating revenue. The addition of an easily removable fancover, such as a fan cover attached via magnetic fasteners, hastens themaintenance process. Thus, the costs associated with lost revenue due toEGM down-time can be reduced.

Next, details of the heat dissipation units, 414 and 416, are described.FIGS. 9A shows view from the side of the heat dissipation units 414 and416 as installed in a GCU. FIG. 9B show a perspective view where thedissipation units are pulled apart.

The units, 414 and 416, each include a frame, such as 704 and 716. Theframes can be a sheet of metal, such as but not limited to stainlesssteel. The frames, 704 and 716, can include mounting tabs, such as 730for attaching the heat dissipation unit to the frame of the GCU. Inaddition, the frames, 704 and 716, can include mounting points, such as732 a and 732 b, for attaching boards associated with the gamecontroller. For instance, a motherboard and a GPU board are shownmounted to an exterior portion of frames, 704 and 716 in FIGS. 5A and6B.

On the side opposite of the mounting points for the circuit boards areheat pipes and fin stacks. Heat dissipation unit 416 includes fins, suchas 712. On 416, the fins are separated into two groups with a firstgroup having a top fin 702 a and a bottom fin 702 b and a second grouphaving a top fin 702 c and a bottom fin 702 d. A gap 714, which islarger than the fin spacing between either of the first or second group,is disposed between the two fin groups. The fins in each group aresubstantially perpendicular to frame 704.

In various embodiments, the spacing between the fins in the first groupand the second group can be approximately the same or different betweenthe groups. In one embodiment, the gaps between the fins areapproximately the same within the fins of the first group and the secondgroup. In another embodiment, spacing between the fins can vary withineach of the fin groups.

The fins in each of the two groups can be angled so that the fins arenot perpendicular to the frame 704. The fin angle can be same for eachfin or can vary from fin to fin. Also, the fin angle can be the same ineach group but can vary between each of the two fin groups. For example,the fins in a first group can be angled downward while the fins in thesecond group can be angled upward.

The size of the gap 714 and the number of fins in each group can dependon the amount of heat expected from the circuit components mounted tothe heat dissipation unit. The number fins can be reduced and the gapsize increased as heating load is reduced. Reducing the number of finscan decrease the weight of the device and reduce production costs. Asthe heating load increases, the gap size 714 can be reduced. Ifnecessary, to accommodate a desired heating load, the gap 714 can beeliminated and a single fin stack, such as shown on heat dissipationunit 414 can be provided.

A spacing is provided between frame 704 and frame 716 of the heatdissipation units 414 and 416. The spacing is divided into a firstportion 710 and a second portion 724. In this example, the first portion710 is larger than the second portion 724. The heat dissipation unitstouch so that all of the spacing is used. The division between the firstportion and the second portion can be varied depending on the heatingload expected to be experienced by each of the heat dissipation units.Thus, GCUs with different components that emit more or less heat can beaccommodated without changing the overall dimensions of the GCU.

The heat dissipations each can include a number of heat pipes. The heatpipes in each of the heat dissipation units pass by a hot areaassociated with one of the electrical components, such as the CPU or GPUand then fan out into the fin stacks. This arrangement allows the heatto be more efficiently dissipated to air which is flowing through finsas a result of the fans driving air through the system.

The heat pipes can be a metal of some type or some other material whichefficiently conducts heat. For example, stainless steel or copper. Insome embodiments, the heat pipes can be solid. In other embodiments, theheat pipes can be hollow. In one embodiment, each heat pipe can bearranged in a loop.

In heat dissipation unit, 414, three heat pipes 720 a, 720 b and 720 c,are used. In heat dissipation unit, 416, four heat pipes, 706 a, 706 b,706 c and 706 d are used. In FIG. 9B, the heat pipes are off set fromone another between the heat dissipation units. Thus, the heat pipes inunit 414 are generally positioned in the gaps between the heat pipesassociated with unit 416. This arrangement can more efficientlydissipate the heat generated by both units. The number of heat pipesused in each heat pipe and the diameter of each of the heat pipes whichare used can be varied depending on the expected heat loads to each ofthe heat dissipation units. For example, three heat pipes can be used onboth units or three heat pipes can be used on one unit and two heatpipes used on the other unit. In another example, one or both of theheat dissipation units may not use heat pipes.

Metal strips, such as 708 and 722, may be placed on the outside of thefin stacks. The metal plates secure the fins in place. The metal platesdon't totally cover the gaps between the fins. Thus, air can flowcrosswise from the first heat dissipation unit to the second heatdissipation unit. The metal plates line up on each of the heatdissipation units and can be in contact with one another when the heatdissipation units are installed within the GCU.

Next, a method of replacing of performing maintenance on an EGM isdescribed. FIG. 10 illustrates a method 800 of replacing a fan coupledto a secure enclosure for a game control unit. In 802, the EGM cabinetdoor can be opened. In 804, without opening and/or unlocking the secureenclosure having the GCU, the fan cover to the fan cover can be removed.In one embodiment, the fan cover can be decoupled from the magneticfasteners.

In 806, a fan can be removed from the fan enclosure and decoupled from apower and/or data coupling. In one embodiment, the fan can be lifted offof mounting posts. In addition, filters and/or a metal mesh, disposedbetween the fan and the bottom of the fan enclosure, can also beremoved, cleaned and/or replaced.

In 808, a new fan can be attached to a power and/or data coupling andmounted in the fan enclosure. In 810, the fan cover can be coupled tothe secure enclosure. For example, the fan cover can be positioned overmagnets to fasten the cover to the secure enclosure. In 812, the gamingmachine cabinet door can be closed and the EGM can initialize to anoperational mode.

Next, a method of forming an EGM is described. FIG. 11 illustrates amethod 900 of forming game controller unit including CPU and GPU boardsand CPU and GPU heat sinks. In 902, the location of various electricalcomponents within the GCU and the heat load associated with thecomponents can be determined. Typically, the CPU, GPU and the massstorage device, such as a hard disk drive or flash drive, generate themost heat. The amount of heat varies with activity. For example, moreheat is generated when a game is actively being generated than when anEGM is in a minimal activity state.

Next, based upon the anticipated heat loads for the various electricalcomponents, two heat dissipation units can be designed. First, in 904,the number, placement and thickness of the heat pipes in each of theheat dissipation units can be determined. The heat pipes can be placednear the locations where the most heat is emitted. These locations willdepend on where components, such as the CPU and GPU are located.Typically, the CPU and GPU can be located on opposite sides of the GCUwhere a first heat dissipation unit dissipates heat from the CPU and asecond heat dissipation unit dissipates heat from the GPU.

The heat pipes can be spread out from the locations where heat is beingemitted to allow the heat carried by the heat pipes to be dissipatedwithin the fins associated with the heat dissipation units. Thelocations of the heat pipes in the first heat dissipation unit canaccount for the locations in the second heat dissipation unit. Inparticular, the locations of the heat pipes in each of the units can beselected so that they are offset relative to one another so that theheat pipes from the two different units don't dump their heat at thesame location.

Next, in 906, based upon the expected heat loads and heat pipelocations, the number of fins, fin spacing, fin angles and fin groupingscan be determined for each of the heat dissipation units. Further, asdescribed above, a spacing width between the boards associated with theGPU and CPU is provided which is occupied by the two heat dissipationunits. Based upon the heat loads, one of the heat dissipation units canbe wider than the other heat dissipation unit. In 906, the width of theeach of the heat dissipation units can also be determined.

In 908, the first and second heat dissipation units can be formed withthe heat pipe locations and determined fin design. In 910, fans can beselected. The fans can be selected to drive a certain amount of airthrough the heat dissipation units as a function of time.

In 912, the first heat dissipation unit and the second dissipation unitcan be mounted to a frame associated with the GCU. The heat dissipationunits form an interior core of the GCU where an air flow path isprovided through the core. The one or more fans drive air through thecore. Then, electrical boards, such as the electrical boards includingthe CPU and GPU can be mounted to the outside of the heat dissipationunits. Other electrical components, such as the mass storage device andthe non-volatile memory can also be coupled to the outside of the heatdissipation units.

Next, in 914, a backplane can be mounted to an interior surface withinthe gaming machine cabinet. The secure enclosure can be mounted to thebackplane. The backplane includes a plurality of connectors. Variousgaming devices associated with the EGM can be coupled to the connectors.

In 916, a game control unit can be installed within the secureenclosure. In particular, a door of the secure enclosure can be openedand the game control unit can be slid into the secure enclosure. Then,the door to the secure enclosure can be closed and locked if desired.Next, the EGM can start up and enter into an operational state wheregame play is available on the EGM. A game controller on the GCU cancontrol play of a wager-based game on the EGM.

Because such information and program instructions may be employed toimplement the systems/methods described herein, the present inventionrelates to tangible, machine readable media that include programinstructions, state information, etc. for performing various operationsdescribed herein. Examples of machine-readable media include hard disks,floppy disks, magnetic tape, optical media such as CD-ROM disks andDVDs; magneto-optical media such as optical disks, and hardware devicesthat are specially configured to store and perform program instructions,such as read-only memory devices (ROM) and programmable read-only memorydevices (PROMs). Examples of program instructions include both machinecode, such as produced by a compiler, and files containing higher levelcode that may be executed by the computer using an interpreter.

Although many of the components and processes are described above in thesingular for convenience, it will be appreciated by one of skill in theart that multiple components and repeated processes can also be used topractice the techniques of the present disclosure.

While the present disclosure has been particularly shown and describedwith reference to specific embodiments thereof, it will be understood bythose skilled in the art that changes in the form and details of thedisclosed embodiments may be made without departing from the spirit orscope of the invention. It is therefore intended that the invention beinterpreted to include all variations and equivalents that fall withinthe true spirit and scope of the present invention.

What is claimed is:
 1. A system comprising: an enclosure including twocompartments wherein a first compartment is accessed via a doorincluding a locking mechanism and wherein a second compartment issecured via a cover; a game control unit, disposed within the firstcompartment of the enclosure, including a frame, two heat dissipationunits coupled to the frame, a plurality of electrical circuit boardsforming a game controller, coupled to an outside of the heat dissipationunits adjacent to walls of the enclosure, wherein the game controllerincludes a CPU, GPU, RAM, BIOS and a mass storage device storing gamesoftware and wherein the game controller executes the game software tocontrol a wager-based game played on an electronic gaming machine; afirst fan disposed within the second compartment; and a first pluralityof apertures, between the first compartment and the second compartment,which allow air driven by the first fan, to move between the firstcompartment and the second compartment to cause heat from the heatdissipation units to be removed from the first compartment; wherein theheat dissipation units in the first compartment are disposed adjacent toa first side of the first plurality of apertures such, such that whenthe door to the first compartment is locked via the locking mechanismand the cover and the first fan is removed from the second compartmentfor servicing the first fan, the game controller is not exposedtampering allowing the first fan to be serviced by a service technicianwithout a presence of security personnel.
 2. The system of claim 1,wherein the cover is attached via magnets, allowing the cover to beremoved by hand.
 3. The system of claim 1, wherein the cover isconfigured to be slid into a track, allowing the cover to be removed byhand.
 4. The system of claim 1, wherein the cover includes a secondplurality of apertures allowing air to move between outside of theenclosure and the second compartment.
 5. The system of claim 1, furthercomprising a second fan and a second plurality of apertures, between thefirst compartment and the second compartment, which allow air driven bythe second fan, to move between the first compartment and the secondcompartment to cause heat from the heat dissipation units to be removedfrom the first compartment.
 6. The system of claim 5, further comprisinga frame which couples the first fan to the second fan to allow the firstfan and the second fan to be removed as a single unit.
 7. The system ofclaim 1, wherein the first fan is coupled to the cover to allow thefirst fan and the cover to be removed as a single unit.
 8. The system ofclaim 1, wherein the second compartment is formed from the cover andsidewalls and the second compartment is detachable from the enclosure.9. The system of claim 1, wherein the cover includes an aperture whichallows a power connector for the first fan to enter from outsideenclosure and into the second compartment.
 10. The system of claim 1,further comprising a power and data connector located inside of thesecond compartment, configured to provide power and providecommunications with the fan, wherein wires to the power and dataconnector are routed outside of the first compartment.
 11. The system ofclaim 1, further comprising one or more mounting posts perpendicular toa bottom of the second compartment configured to receive the fan. 12.The system of claim 1, further comprising a filter disposed between abottom of the fan and the first plurality of apertures.
 13. The systemof claim 1, wherein the frame of the game control unit is configuredsuch that it is only mechanically fits into the first compartment of theenclosure when it is in a first orientation.
 14. The system of claim 1,wherein the first fan is magnetically secured to the enclosure.
 15. Thesystem of claim 1, further comprising a backplane wherein the backplaneis configured to mount to a wall of a cabinet of the electronic gamingmachine and wherein the enclosure is mounted to the backplane.
 16. Thesystem of claim 15, further a power and data connector running from thebackplane to the first fan wherein the power and data connector arerouted outside of the first compartment.
 17. A method of servicing anelectronic gaming machine (EGM) including a cabinet comprising:providing an enclosure including two compartments, secured within aninterior portion of the cabinet of the EGM, wherein a first compartmentis accessed via a door including a locking mechanism and wherein asecond compartment is secured via a cover; 2) a game control unit,locked, via the locking mechanism, within the first compartment of theenclosure, including a frame, two heat dissipation units coupled to theframe, a plurality of electrical circuit boards forming a gamecontroller, coupled to an outside of the heat dissipation units adjacentto walls of the enclosure, wherein the game controller includes a CPU,GPU, RAM, BIOS and a mass storage device storing game software andwherein the game controller executes the game software to control awager-based game played on the EGM; 3) a first fan disposed within thesecond compartment; and 4) a first plurality of apertures, between thefirst compartment and the second compartment, which allow air driven bythe first fan, to move between the first compartment and the secondcompartment to cause heat from the heat dissipation units to be removedfrom the first compartment; wherein the heat dissipation units in thefirst compartment are disposed adjacent to a first side of the firstplurality of apertures such, such that when the door to the firstcompartment is locked via the locking mechanism and the cover and thefirst fan is removed from the second compartment for servicing the firstfan, the game controller is not exposed tampering; opening a door to thecabinet; while the door to the first compartment remains locked with thegame control unit secure in the first compartment, removing the cover tothe second compartment; removing the first fan from the secondcompartment; replacing the first fan with a second fan; placing thecover over the second compartment; and closing the cabinet.
 18. Themethod of claim 17, wherein the cover is magnetically coupled to theenclosure allowing the cover to be removed by hand.
 19. The method ofclaim 17, wherein the enclosure includes a slot for receiving the coverto allow the cover to be slid off by hand.
 20. The method of claim 17,wherein the second compartment includes one or more mounting postsextending perpendicularly from a bottom of the second compartment,further comprising removing the first fan from the mounting posts andplacing the second fan over the mounting posts to secure the second fanto the enclosure.